EP 0474432 A3 19920415 - ROADWAY IMPACT ATTENUATOR
Title (en)
ROADWAY IMPACT ATTENUATOR
Publication
Application
Priority
US 57763890 A 19900904
Abstract (en)
[origin: EP0474432A2] A collapsible roadway impact attenuator (10, 100) includes an array of spaced parallel support elements (18, 116) arranged to move axially when the attenuator (10, 100) is struck by impacting vehicle. Elastomeric energy absorbing sheets (50, 114) are rigidly secured between adjacent support elements (18, 116) so as to extend axially and horizontally. When the attenuator (10, 100) is struck axially by a vehicle, the support elements (18, 116) move towards one another and the energy absorbing sheets (50, 114) form at least three inflections (58a, 58b, 58c, 118), thereby enhancing energy absorbing efficiency of the attenuator (10, 100). Tethers (112) can be mounted between overlying elastomeric sheets (114) to increase the number of inflections (118) and the energy efficiency of the attenuator (110). <IMAGE>
IPC 1-7
IPC 8 full level
E01F 15/04 (2006.01); E01F 15/14 (2006.01)
CPC (source: EP US)
E01F 15/146 (2013.01 - EP US)
Citation (search report)
- [YD] EP 0042645 A2 19811230 - NEDERLANDEN STAAT [NL]
- [Y] EP 0165738 A2 19851227 - ENERGY ABSORPTION SYSTEM [US]
- [AD] US 4815565 A 19890328 - SICKING DEAN L [US], et al
- [AD] US 4352484 A 19821005 - GERTZ DAVID C, et al
- [A] EP 0286782 A1 19881019 - SPS SCHUTZPLANKEN GMBH [DE]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0474432 A2 19920311; EP 0474432 A3 19920415; EP 0474432 B1 19941019; AT E113101 T1 19941115; AU 635152 B2 19930311; AU 8347291 A 19920312; CA 2050227 A1 19920305; CA 2050227 C 19940111; DE 69104679 D1 19941124; DE 69104679 T2 19950518; JP H0673714 A 19940315; US 5112028 A 19920512
DOCDB simple family (application)
EP 91307924 A 19910830; AT 91307924 T 19910830; AU 8347291 A 19910828; CA 2050227 A 19910829; DE 69104679 T 19910830; JP 22444991 A 19910904; US 57763890 A 19900904